About: http://webisa.webdatacommons.org/375515566

Property	Value
http://www.w3.org/1999/02/22-rdf-syntax-ns#type	http://www.w3.org/ns/prov#Entity
http://www.w3.org/ns/prov#value	The light device of claim 5 further comprising means for modifying the combined signal propagated in one of the first and second arcuate regions to permit an observer to determine whether the aircraft is approaching or departing.
http://www.w3.org/ns/prov#wasQuotedFrom	google.ca